Type-writing machine.



Patented Sept. 26, 1916.

SHEETSSHEET 1.

N. H. ANDERSON.

TYPE WRITING MACHINE.

APPLICATION FILED AUG.6. 1913.

RM & M m S III, I Z 3 f IIH|| |\H I f 2 Z 3 Z L L m I r U. @V ,I 13

WITNESSES.-

N. H. ANDERSON.

TYPE WRITING MACHINE. APPLICATION HLED A'ue.6. 19x3.

WITNESSES: LML 4,

{9.6 yup ATTORNEY I UNITED STATES PATENT OFFICE.

NILS H. ANDERSON, OF MIDDLETOWN, CONNECTICUT, ASSIGNOR TO THE NOISELESSTYPEWRITER COMPANY, OF MIDDLETOWN, CONNECTICUT, A CORPORATION OFCONNECTICUT.

TYPE-WRITING MACHINE.

Specification of Letters Patent Patented Sept. 26, 1916.

Application filed August 6, 1913. Serial No. 783,332.

To all whom it may concern:

Be it known that I, NILs H. ANDERSON, a citizen of the United States,residing at Midclletown, in the county of Middlesex and State ofConnecticut, have invented certain new and useful Improvements inTyperiting Machines, of which the following is a full, clear, and exactdescription, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relatesto typewriting Inachines, and with regard tocertain more dominant features thereof, to means adapted to indicate therelative position of the carriage to the common printing point of thevarious type carriers as well as to the associated coacting parts ofsuch mechanism.

One of the objects of the present invention is to provide a simple andpractical form of carriage indicator which will be durable inconstruction and efiicient in action.

Another object is to provide mechanism of the above character which willbe silent and reliable in its operation.

Another object is to provide a carriage indicator mechanism of suchinexpensive construction as to be commercially practicable and locatedin such position as to be constantly visible and easily read by theoperator.

Other objects will be in part obvious and in part pointed outhereinafter.

The invention accordingly consists in the features of construction,combinations of elements and arrangement of parts which will beexemplified in the construction hereinafter set forth, and the scope ofthe application of which will be indicated in the following claims.

In the accompanying drawings in which is illustrated one of the variouspossible embodiments of the several features of the invention, Figure 1is a plan view showing such parts of a typewriting machine as arenecessary to obtain a clear understanding of the present invention; Fig.2 is a side elevation of the parts shown in Fig. 1; and Fig.

and more particularly to Fig. 1, there is shown a transverse support 1adapted to con-r Mounted upon this support 1 is a nish the motive powerfor driving the carriage, indicated diagrammatically at 7, and IlbbOIlmechanism in the usual manner. This drum 4 is connected with a drivingshaft 8 by means of the set screw 9 and is provided at its outer endwith a beveled gear 10 meshing with a sheet metal gear 11 loose upon amain ribbon spool driving shaft 12. This shaft 12 is provided at each enlil, only one end being herein shown, with a beveled gear 13 adaptedtoco-act with a sheet metal beveled gear 14 mounted upon a rib bon spoolspindle 15. It will thus be seen that as the shaft 8 is rotated by thedrum in one direction motion will be transmitted through the gears 11,13 and 14 to rotate the ribbonspindle to feed the ribbon from one spoolto the other. In order to prevent an unwinding of the ribbon spool whenthe carriage is returned to normal position, a clutch 16 is interposedbetween the gear 11 and main driving shaft 12 and is normally held inclutched relation by a spiral spring 17 surrounding the shaft 12 and oneend or reduced portion of the clutch. In order to positively hold theshaft against reverse ro tation and thus permit the clutch to act,'aratchet 18 is also mounted fast upon the shaft 12, into enga ement withwhich a pawl 20, Fig. 2, is held by means of a spring 21.

Mounted upon the hub ofthe gear 10 and rotating therewith is a pinion 22which meshes with another pinion 23 of substantially the same size fixedon one end of a shaft 24 extending fore and aft the machine. This shaftis supported by brackets 25 and 26, near its opposite ends, from anydesired fixed part of the frame. At the forward end of the shaft 24 isadjustably mounted an indicator wheel 27 which is graduated to representthe step-by-step movement of the carriage, each step representing oneletter space. This scale is preferably divided in the same manner as thepaper-finger scale usually positioned upon the carriage above the platenroller and which it is designed to replace, that is, the scale isdivided in s,

as denoted by the numbers 10, 20, 30, etc., every fifth number beingdenoted by a heavier line. This scale is visible through a relativelylarge opening 28 in a housing built in front of the major portion of thefront wall of the machine, designed to protect rather than conceal thewheel, as shown more clearly in Fig. 3. This wheel coacts with anadjustable plate 30 carrying a central index or zero point as well as anauxiliary scale to one side thereof. These two indicator scales andrelatively large opening in the housing permit of alternative readingsthereof. For instance, the scale upon the index wheel 27 may be readdirectly with respect to the zero point, or the 10s numbers may be readwith relation to the number on the auxiliary scale. Thus, as shown inFig. 3, the carriage occupies the relative position 45 with respect tothe type carriers, that is, the number 45 reg-- isters with the zeropoint on the auxiliary scale 30 and also the number 40 registers withthe point 5 on the auxiliary scale, the

sum of which equals 45. If the carriage is moved forwardly two letterspaces, the mark 4O on the index wheel moves opposite the point 7 on theauxiliary scale; also the point 47 on the indicator wheel 27 will thenbe opposite the zero point on the auxilia ryscale. It will, of course,be understood that this mechanism is provided with various adjustingfeatures in order that the indicator may properly denote the relativeposition of the carriage. This may be done by moving the auxiliary scale30 about the central point of support 31, as by loosening the set screwthere and rotating it to either the right or left as may be necessary.The indicator wheel 27, mounted upon the end of the shaft 24, may berotated relatively thereto into the desired adjusted position byloosening nuts 32 and rotating the wheel 27 to the desired adjustedposition, after which the nuts 32 are tightened. It will also be notedthat the shaft 24 is permitted to have a slight vertical adjustment bymoving the bracket 26 relatively to its support by loosening the setscrews 33 which pass' through slots therein as clearly shown in As theoperation and method of use of the indicator above described are clear,a reiteration thereof is believed to be unneces- 1 sary. It isSllffiCleIlt to state that the present device is designed to overcome.certain objec- I tions inherent in present constructions used on v1s1blemachines, the pr ncipal one "being that the paper-finger scale carriedby the] I carriage usually occupies a place above the. Y j platenroller, thus more or less obstructing the printed matter, and in orderto fully read the page, it is either necessary to'rotate the platenroller to feed thepaper beyond the scale or move the scale itself; Thepresent device, mounted in the front part of the machine just above thekeyboard, is believed to possess all of the advantages of the ordi- 3nary scale, but none' of its disadvantages, and has besides the merit ofbringing the scale to a point on the machine where it is constantlyvisible for quick reading by the It is also seen that this inventionoperator.

is particularly. designed for accomplishing in a simple and practicalmanner all of the,

objects and advantages above set forth. I

As many changes could be made in the widely different embodiments ofthis invention could be made without departing from i the scope thereof,it is intended that all matter contained in the above description orshown in the accompanying drawings shall be interpreted as illustrativeand not in a limiting sense.

Having described my invention, what I claim as new and desire to securevby Letters Patent is: l

1. In a typewriting ma'chine,-i n combination,'carriage driving means, afrontplate on the machine having a relatively large opening adjacent thekeyboard, a movable scale having a plurality of indices exposed throughsaid opening, said scale being movable with the carriage by said means,and a relatively fixed scale 7 on said front plate adjacentthe exposedindices of said movable scale and coacting therewith to indicate 7 theinstant travel position of the carriage.

2. In a'typewriting machine, incombina- I i tion, a spring driving drum,a movable scale positioned in the front part of the machine adapted tobe driven by said'driving drum,

and an adjustable scale coacting with said first-mentioned scale topermit alternative reading of the position of the carriage relative tothe printing point.

3. In a typewriting machine, in combination, a carriage driving drumpositioned at the rear of the machine, a curved scale 'POSltioned at thefront of the machine, a fixed indicator to co-act with said scale,gearing. interposed between the driving drum and 3 said scale for movingthe latter relatively to said indicator to indicate the positi n f 9oabove construction and many apparently the carriage with respect to theprinting point, and means to permit adjustment of a rotatable scalepositioned in front of the major portion of said front plate and adaptedto be protected thereby, gearing between said carriage driving means andsaid scale for moving the latter with the carriage, a relatively fixedindicator scale to co-act with said first-mentioned scale, and means topermit adjustment of said indicator scale to register the indicesthereonwith the indices of said first-mentioned scale.

6. In a typewriting machine, in combination, carriage driving means, afront plate, a rotatable scale positioned in front of the major portionof said front plate and adapted to be protected thereby, gearing betweensaid carriage driving means and said scale adapted to move the scaleWith the carriage, and an indicator scale adjustably mounted upon thefront wall of the machine to co-act with said first-mentioned scale.

7 In a typewriting machine, in combination, driving means, a scalepositioned in front of the major portion of the front Wall of saidmachine, connections between said driving means and said scale, ahousing for said scale to protect the same and having a relatively largeopening therein to expose a large portion of the scale, and meansmounted upon the front wall of the machine to co-act with said scale.

8. In a typewriting machine, in combination, driving means, a frontwall, a scale positioned in front of the major portion of the frontwall, means connecting said driving means and said scale, a housing forsaid scale to protect the same and having a relatively large openingtherein to expose a large portion of the scale, and an adjustablymounted indicating scale to co-act with said first-mentioned scale topermit of alternative,

reading.

9. In a typewritingmachine, in combina-' tion, a movable scale having aplurality of exposed indices remote from the printing line, means toinsure corresponding movement of said scale and the carriage, arelatively fixed indicator to coact with said exposed indices forindicating'the position of the carriage with respect to the printingpoint, and means to permit. adjustment of said scale relatively to saidindicator and to the carriage.

10. In a typewriting machine, in combi nation, a spring driving drumhaving a main driving shaft, a gear mounted on said shaft, a drivenshaft, a gear mounted thereon meshing With said first-mentioned gear, a

rotatable scale at the front end of said driven shaft adapted to bedriven from said driving means and at the same rate of rotation,saidscale being positioned in front of the major portion of the frontplate of the machine, a housing formed by a part of the front wall ofthe frame of the machine adapted to protect said scale, and a secondscale adjustably mounted upon said housing adapted to co-act with saidfirstmentioned scale.

11. In a typewriting machine, in combination, a spring driving drumhaving a main driving shaft, a gear mounted on said shaft, a secondshaft connected therewith, a rotatable scale at the front end of saidsecond-mentioned shaft, said scale being positioned in front of themajor portion of the frontplate of the machine, a housing having arelatively large opening formed by the front wall of the frame of themachine adapted to protect said scale, a second scale adjustably mountedupon said housing adapted to co-act with said first-mentioned scale, andmeans to permit adjustment of both of said scales relatively to eachother and to the spring driving drum.

In testimony whereof I aflix my signature, in the presence of twowitnesses.

NILS H. ANDERSON.

